Yarn-carrier for knitting-machines



(No Model) 2 SheetsSheet 1.

W. ESTY.

YARN CARRIER FOR KNITTING MACHINES.

No. 371,564. Patented Oct. 18, 1887.

ll 'I I ml hhl I Wa'lnesses: mam MM. W I $3 MOMfllloruey.

UNITED STATES PATENT OFFICE \VILLIAM ESTY, OF LACONIA, NEW HAMPSHIRE.

YARN-CARRIER FOR KNITTING-MACHINES.

- SPECIFICATION forming part of Letters Patent No. 371,564, datedOctober 18, 1287.

Application filed March 10, 1887.

To all whom it may concern.-

Be it known that 1, WILLIAM ESTY, of Laconia, in the county of Belknapand State of New Hampshire, have invented. certain new and usefulImprovements in YarnOarriers for Knitting-Machines, of which thefollowing, taken in connection with the accompanying drawings, is aspecification.

My invention relates to thread-carriers l'or knitting-machines; and itconsists in a threadcarrier especially designed for delivering a yarn toeach of two parallel rows of needles simultaneously, and for crossingthe yarns from one row to the other at the opposite ends of the rows,substantially in the manner in which the yarns are fed. and crossed inthe improved art or method of knitting presented in Letters Patent No.302,119, granted to me July 15, 1884.

'My invention further consists in the combination of a thread-carrierhaving a yarnguiding eye at each end, a pinion on the shank or spindleof said yarn-guide, two rack-bars engaging with said pinion uponopposite sides thereof, and a stop at each end of the traverse of saidyarn-guide, constructed and arranged to be moved into line with eitherrack-bar, whereby the yarn-carrier may be rotated at both ends or oneend only of its traverse, or it may be traversed without rotating ateither end of its movement when desired.

In the construction which I have now invented I provide an effectuallock for firmly holding the yarnguiding eyes in the position into whichthey are turned when they reach either end of the rows, but which shallat the same time readily yield to permit the turning movement of thesaid yarn-guiding eyes by which the yarns are crossed from the one rowof needles to the other, and vice versa. I also provide for lifting thesaid yarn guiding eyes as they are turned, to prevent them from engagingwith the portions of the yarns or threads which extend from the eyes tothe needles.

Figure l of the drawings isa plan of my improved yarn-carrier and parts0 mnected there with. Fig. 2 is an end elevation of the same parts. Fig.3 is asectional front elevation ofthe yarn carrier drawn to an enlargedscale. Fig. 4 is a vertical section on line a." x on Fig. 3, and showinga portion of the central spindle with pinion-teeth cut therein inelevation. Fig. 5

Serial No. 230,386. (No model.)

is a horizontal section on line y g on Figs. 3 and 4-. Fig. 6 is anelevation of the cams for raising and locking the yarn-carriers; andFig. 7 is a central vertical section of a portion of the lower end ofthe spindle of the yarn car rier, saidsection being at right angles tothe section shown in Fig. 4.

In the drawings a a are the yarnguiding eyes formed in the plates a a,each provided with a shank, a", which fits into an oblique hole formedone in each end of a short bar or plate, 12, from the upper surface ofwhich projects a pin, 0, fitting in the slotted end of the stem orspindle d and clamped therein by means ofa collar, 6, and set-screwf.The stem d passes through the block vided with the cylindricalprojections h and ion the upper and lower sides thereof, respectively.The upper projection, h, passes through an opening in the plate Ir,secured to or otherwise made part of the slide 1, which is moved by anyusual and well-known means from end to end of the slide-bar m, todeliver the yarns to the needles, as customary. The upper projection, h,is screw-threaded at n, and after the said projection has been passedupward through the opening in plate It the closed cylindrical cap 0 isplaced over the top of the projection and screwed down upon the top ofthe plate 7:, thereby firmly securing the block gand parts carriedthereby to the slide Z. The upper end of projection his cut away onopposite sides, as shown at It, so as to leave two projecting points,it", with inclined sides It. The stem d is also screw-threaded near itsupper end, as shown at d, and upon the same is placed a collar, d",interiorly threaded to fit the said threaded portion of the stem orspindle. The screw-threads on said spindle are cut away on one side atd", and through the collar d is passed a screw, (2*, serving, whenturned up against the flattened portion of the stem or spindle, to lockthe collar thereon. By turning the collar on the stem or spindle afterloosening screw d the collar audits yarn-guiding eyes may be raised orlowered to any desired height. The lower end of collar (1 is cut awaysimilarly to the upper end of projection h, and so that the points onopposite sides of the collar will fit the notches of the projection, andvice versa. The springp is placed upon the upper end of g, which is promove endwise or vertically as the inclined that the opposed cam-surfacesof the collar be traversed without rotating at either end of of thecollar d, and vice versa, an interlockthe stem or spindle between collar(1 and the! closed end of the cap, and, pressing upon the collar, servesto depress the stem or spindle and maintain the points on the projectionh and collar d. in the opposite recesses. A pinion, j, in the presentinstance formed of teeth, on the stem or spindle, is engaged by slidingrack-bars q, mounted on opposite sides of the same in ways formedtherefor in the block 9, which block constitutes the body of thethreadcarrier, said bars being held to the block by the cap-pieces 1'.These bars are adapted to strike, as the carrier is moved toward eitherend of its traverse, against the stops 8, mounted in bars t, which maybe either fixed, or may be arranged to be slid backward or forward byhand or otherwise, to place the stops 8 at either end in line witheither rackbar, whereby the yarn-carrier may be rotated at one or bothends of its traverse, or it may its movement. By the contact of therackbars with the stops the stem or spindle d is turned so as to crossthe yarns from one row of needles to the other. The stops may beadjustedin posit-ion or moved, as desired, to vary the action upon therack-bars and stem or spindle, according as -it is desired to have thework completely closed or open at one or both sides of the machine.

In my application Serial No. 249,335, filed September 10, 1887, I haveshown pattern mechanism for determining the positions of these stops.

. The opposed portions of the collar 01 and projection h constitutecams, so that when the stem or spindle d is turned it is caused to partsof the collar ride upon those of the projection. The effect of this isthat as the spindle begins to turn to cross the yarns at the end of acourse the yarn-guiding eyes are lifted to a higher level, therebyavoiding all danger of the yarn carrier as it turns. from catching theportions of the yarns which extend from the eyes to the needles; also,by the fitting ofthe points on the projection h into the notches ing ofparts is secured which prevents the yarn-guiding eyes from beingdisturbed from their proper positions, since the stem or spindle dcannot be turned until after sufficient power has been applied theretoto turn the collar upon the projection and overcome the power of thespring, which tends to hold the points of the collar in the lowestportions of the notches in the projection h.

In the present case the construction is such and projectionh serve tonot only lock the raise the same as they are turned to cross the yarns.The said cam-surfaces, however, need be only of sufficient proportionsto effect the locking of the stem and yarn-guiding eyes in case it isnot desired to lift the latter as they turn. y

In another application of mine, filed Sep tember 10, 1887 ,and numberedserially 249,335, mechanism similar to that represented in thisapplication is shown and described, but not claimed, except'i-ncombination with other devices not shown inthe drawings of this case ordescribed in this specification.

Having thus described my invention,what I claim as new, and desire tosecure by Letters Patent of the United States, is-- 1. The combination,with the stem or spindle d, the yarn-guiding eyes carried thereby, andthe body of the carrier,- of means for locking said stem andyarn-guiding eyes in 'adjusted position, consisting of a fixedprojection on the body of the carrier, a collar on the stem or spindle,said projection and collar having corresponding interengaging points andrecesses, and a spring for holding the collar pressed against the fixedprojection, substantially as described.

2. The combination, with the stem or spindle d, the yarn-guiding eyescarried thereby, and the body of the carrier, of means for locking saidstern and yarn-guiding eyes in ad jnsted position and raising the samemomentarily during the turning thereof, consisting of a fixed projectionon the body of the carrier, a collar on the stem or spindle, saidprojection and collar having corresponding engaging cam-surfaces, and aspring for holding the collar pressed against the fixed projection,substantially as described.

3. The combination, with the stem or spindle d, the yarn-guiding eyescarried thereby, and the body of the carrier, of the fixed projection hand collar d, said projection and collar formedwith the interengagingcam-surfaces,as described, the spring, and the cap, substantially asdescribed. 4. The combination, with the stem or spindle 01, having thepinion j, the yarn-guiding eyes carried thereby, and the body of thecarrier, of the two rack-bars q q, and a stop, 8, at each end of thetraverse of said yarn-guide, and constructed and arranged to be movedfrom the path of one rack-bar to the path of the other rack-bar, as maybe desired.

5. The yarn-carrier plate I), provided with the pin a and an obliquehole in each end thereof, in combination with the plates a a, eachprovided with a shank, a", and a yarnguiding eye, a, andremovablysecured in one of the oblique holes in the plate b, as shownand described.

In testimony whereof I have signed my name to thisspecification, in thepresence of two subscribing witnesses,on this 8th day of March, A. D.,1887.

WILLIAM ESTY.

"Witnesses:

STEPHEN S. J EWETT, S. E. BLACKSTONE.

